Campbell and Robertson's car could not be located immediately after the discovery of the victim's body, police said.

Catherine Drees, an attorney who represented Campbell in previous cases, said Campbell showed up at her office on Seabreeze Boulevard on Thursday morning seeking advice. According to Drees, Campbell wanted to speak with federal authorities instead of local police, so she put him in touch the the FBI, which has an office in the same building.

Police said Campbell drove Robertson's car to the office. The car has since been towed from the parking lot.